Fluke 120B Series Industrial ScopeMeter handheld Oscilloscopes
Specifications: Fluke 120B Series Industrial ScopeMeter handheld Oscilloscopes
| Oscilloscope mode | ||
| Vertical | ||
| Frequency response - dc coupled | Without probes and test leads (with BB120) | 123B: dc to 20 MHz (-3 dB) 124B and 125B: dc to 40 MHz (-3 dB) |
| With STL120-IV 1:1 shielded test leads | DC to 12.5 MHz (-3 dB) / dc to 20 MHz (-6 dB) | |
| With VP41 10:1 Probe | 123B: dc to 20MHz (-3 dB) 124B and 125B: dc to 40 MHz (-3 dB) | |
| Frequency response - ac coupled (lf roll off) | Without probes and test leads | <10 Hz (-3 dB) |
| With STL120-IV 1:1 shielded test leads | <10 Hz (-3 dB) | |
| With VP41 10:1 Probe | <10 Hz (-3 dB) | |
| Rise time, excluding probes, test leads | 123B <17.5 ns 124B and 125B <8.75 ns | |
| Input impedance | Without probes and test leads | 1 MΩ//20 pF |
| With BB120 | 1 MΩ//24 pF | |
| With STL120-IV 1:1 shielded test leads | 1 MΩ//230 pF | |
| With VP41 10:1 Probe | 5 MΩ//15.5 pF | |
| Sensitivity | 5 mV to 200 V/div | |
| Analog bandwidth limiter | 10 kHz | |
| Display modes | A, -A, B, -B | |
| Max. input voltage A and B | Direct, with test leads, or with VP41 Probe | 600 Vrms Cat IV, 750 Vrms maximum voltage. |
| With BB120 | 600 Vrms | |
| Max. floating voltage, from any terminal to ground | 600 Vrms Cat IV, 750 Vrms up to 400Hz | |
| Horizontal | ||
| Scope modes | Normal, Single, Roll | |
| Ranges (normal) | Equivalent sampling | 123B: 20 ns to 500 ns/div, |
| 124B and 125B: 10 ns to 500 ns/div | ||
| Real time sampling | 1 μs to 5 s/div | |
| Single (real time) | 1 μs to 5 s/div | |
| Roll (real time) | 1s to 60 s/div | |
| Sampling rate (for both channels simultaneously) | Equivalent sampling (repetitive signals) | Up to 4 GS/s |
| Real time sampling 1 μs to 60 s/div | 40 MS/s | |
| Trigger | ||
| Screen update | Free run, on trigger | |
| Source | A, B | |
| Sensitivity A and B | @ DC to 5 MHz | 0.5 divisions or 5 mV |
| @ 40 MHz | 123B: 4 divisions | |
| 124B and 125B: 1.5 divisions | ||
| @ 60 MHz | 123B: N/A | |
| 124B and 125B: 4 divisions | ||
| Slope | Positive, negative | |
| Advanced scope functions | ||
| Display modes | Normal | Captures up to 25 ns glitches and displays analog-like persistence waveform |
| Smooth | Suppresses noise from a waveform | |
| Glitch off | Does not capture glitches between samples | |
| Envelope | Records and displays the minimum and maximum of waveforms over time | |
| Auto set (Connect-and-View™) | Continuous fully automatic adjustments of amplitude, time base, trigger levels, trigger gap, and hold-off. Manual override by user adjustment of amplitude, time base, or trigger level. | |
| Dual input meter | ||
| The accuracy of all measurements is within ±(% of reading + number of counts) from 18 °C to 28 °C. | ||
| Add 0.1x (specific accuracy) for each °C below 18 °C or above 28 °C. For voltage measurements with 10:1 probe, add probe uncertainty +1%. More than one waveform period must be visible on the screen. |
| Input A and input B | ||
| DC voltage (VDC) | ||
| Ranges | 500 mV, 5 V, 50 V, 500 V, 750 V | |
| Accuracy | ±(0.5% +5 counts) | |
| Common mode rejection (CMRR) | >100 dB @ dc, >60 dB @ 50, 60, or 400 Hz | |
| Full scale reading | 5000 counts | |
| True-rms voltages (V ac and V ac+dc) | ||
| Ranges | 500 mV, 5 V, 50 V, 500 V, 750 V | |
| Accuracy for 5% to 100% of range (DC coupled) | DC to 60 Hz (V ac+dc) | ±(1% +10 counts) |
| 1 Hz to 60 Hz (V ac) | ±(1% +10 counts) | |
| Accuracy for 5% to 100% of range (AC or dc coupled) | 60 Hz to 20 kHz | ±(2.5% +15 counts) |
| DC rejection (only VAC) | >50 dB | |
| Common mode rejection (CMRR) | >100 dB @ dc | |
| >60 dB @ 50, 60, or 400 Hz | ||
| Full scale reading | 5000 counts, reading is independent of any signal crest factor. | |
| Peak | ||
| Modes | Max peak, Min peak, or pk-to-pk | |
| Ranges | 500 mV, 5 V, 50 V, 500 V, 2200 V | |
| Accuracy | Accuracy Max peak or Min peak | 5% of full scale |
| Accuracy Peak-to-Peak | 10% of full scale | |
| Full scale reading | 500 counts | |
| Frequency (Hz) | ||
| Ranges | 123B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz,1 MHz, 10 MHz, and 50 MHz | |
| 124B and 125B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz, 10 MHz, and 70 MHz | ||
| Frequency range | 15 Hz (1 Hz) to 50 MHz in continuous autoset | |
| Accuracy @1 Hz to 1 MHz | ±(0.5% +2 counts) | |
| Full scale reading | 10,000 counts | |
| RPM | ||
| Max reading | 50.00 kRPM | |
| Accuracy | ±(0.5% +2 counts) | |
| Duty cycle (PULSE) | ||
| Range | 2% to 98% | |
| Frequency range | 15 Hz (1 Hz) to 30 MHz in continuous autoset | |
| Pulse width (PULSE) | ||
| Frequency range | 15 Hz (1 Hz) to 30 MHz in continuous autoset | |
| Full scale reading | 1000 counts | |
| Amperes (AMP) | ||
| With current clamp | Ranges | Same as V dc, V ac, V ac+dc, or PEAK |
| Scale factors | 0.1 mV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 mV/mA | |
| Accuracy | Same as V dc, V ac, V ac+dc, or PEAK (add current clamp uncertainty) | |
| Temperature (TEMP) with optional temperature probe | ||
| Range | 200 °C/div (200 °F/div) | |
| Scale factor | 1 mV/°C and 1 mV/°F | |
| Accuracy | As V dc (add temp. probe uncertainty) | |
| Decibel (dB) | ||
| 0 dBV | 1 V | |
| 0 dBm (600 Ω /50 Ω) | 1 mW referenced to 600 Ω or 50 Ω | |
| dB on | V dc, V ac, or Vac+dc | |
| Full scale reading | 1000 counts | |
| Crest factor (CREST) | ||
| Range | 1 to 10 | |
| Full scale reading | 90 Counts | |
| Phase | ||
| Modes | A to B, B to A | |
| Range | 0 to 359 degrees | |
| Resolution | 1 degree | |
| Power (125B only) | ||
| Configurations | 1 phase / 3 phase 3 conductor balanced loads (3 phase: fundamental component only, AUTOSET mode only) | |
| Power factor (PF) | Ratio between watts and VA range - 0.00 to 1.00 | |
| Watt | RMS reading of multiplying corresponding samples of input A (volts) and input B (amperes) | |
| Full scale reading | 999 counts | |
| VA | Vrms x Arms | |
| Full scale reading | 999 counts | |
| VA reactive (var) | √((VA)2-W2) | |
| Full scale reading | 999 counts | |
| Vpwm | ||
| Purpose | To measure on pulse width modulated signals, like motor drive inverter outputs | |
| Principle | Readings show the effective voltage based on the average value of samples over a whole number of periods of the fundamental frequency | |
| Accuracy | As Vrms for sinewave signals | |
| Input A to common | ||
| Ohm (Ω) | ||
| Ranges | 123B and 124B | 500 Ω , 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ |
| 125B | 50 Ω, 500 Ω , 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ | |
| Accuracy | ±(0.6% + 5 counts) 50 Ω ±(2% + 20 counts) | |
| Full scale reading | 50 Ω to 5 MΩ - 5000 counts, 30 MΩ - 3000 counts | |
| Measurement current | 0.5 mA to 50 nA, decreases with increasing ranges | |
| Open circuit voltage | <4 V | |
| Continuity (Cont) | ||
| Beep | <(30 Ω ±5 Ω) in 50 Ω range | |
| Measurement current | 0.5 mA | |
| Detection of shorts of | ≥1 ms | |
| Diode | ||
| Measurement voltage | @0.5 mA | >2.8 V |
| @open circuit | <4 V | |
| Measurement current | 0.5 mA | |
| Polarity | + on input A, - on COM | |
| Capacitance (CAP) | ||
| Ranges | 50 nF, 500 nF, 5 μF, 50 μF, 500 μF | |
| Full scale reading | 5000 counts | |
| Measurement current | 500 nA to 0.5 mA, increases with increasing ranges | |
| Advanced meter functions | ||
| Zero Set | Set actual value to reference | |
| AutoHold (on A) | Captures and freezes a stable measurement result. Beeps when stable. AutoHold works on the main meter reading, with thresholds of 1 Vpp for AC signals and 100 mV for DC signals. | |
| Fixed decimal point | Activated by using attenuation keys | |
| Cursor Readout (124B and 125B) | |||||||
| Sources | A, B | ||||||
| Single vertical line | Average, min and max readout | ||||||
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